CN108545741B - Useless mercury catalyst high efficiente callback technique and device - Google Patents
Useless mercury catalyst high efficiente callback technique and device Download PDFInfo
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- CN108545741B CN108545741B CN201810442830.8A CN201810442830A CN108545741B CN 108545741 B CN108545741 B CN 108545741B CN 201810442830 A CN201810442830 A CN 201810442830A CN 108545741 B CN108545741 B CN 108545741B
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G13/00—Compounds of mercury
- C01G13/04—Halides
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/354—After-treatment
- C01B32/36—Reactivation or regeneration
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/39—Apparatus for the preparation thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
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Abstract
A kind of useless mercury catalyst high efficiente callback technique, useless mercury catalyst to be heated is in recovery furnace, heating recovery furnace to in-furnace temperature is at least up to 320 DEG C, so that the mercury chloride in useless mercury catalyst leaves active carbon in gaseous form, the high-temperature gas of chloride containing mercury is obtained, while obtaining recyclable recovered carbon；With the high-temperature gas of the water effect chloride containing mercury not higher than 70 DEG C, after the high-temperature gas of chloride containing mercury encounters water, mercury chloride therein is just soluble in water, obtains recyclable recycling mercury chloride liquid, which can be repeated for the high-temperature gas that spray has mercury chloride.High efficiente callback active carbon, and almost recycle whole mercury chloride, efficient pollution-free.
Description
Technical field
The present invention relates to useless mercury catalyst recycling field more particularly to a kind of useless mercury catalyst high efficiente callback technique and devices.
Background technique
The most commonly used is lime stone processing to recycle for useless mercury catalyst recycling field at present, is only capable of recycling mercury chloride, activity in this way
Charcoal cannot recycle, and covert increases cost, also have useless mercury catalyst recycling chlorination in such a way that then heating condenses
Mercury, but because heat-resisting just not corrosion-resistant of material, corrosion resistant to be unable to high temperature resistant, so it is unstable to result in whole system,
There are security risks.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of useless mercury catalyst high efficiente callback technique and device, utilizes condensation
Water recycles the mercury chloride in chlorination mercury gas, so that equipment does not have to high temperature resistant, longer life expectancy is more stable.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of useless mercury catalyst high efficiente callback technique, comprising the following steps:
Useless mercury catalyst heating: for useless mercury catalyst to be heated in recovery furnace, recycling in-furnace temperature is at least up to 320 DEG C, makes
Mercury chloride in useless mercury catalyst leaves active carbon in gaseous form, obtains the high-temperature gas of chloride containing mercury and can be recycled
Recovered carbon；
Recycle mercury chloride: with the high-temperature gas of the water effect chloride containing mercury not higher than 60 DEG C, the high-temperature gas of chloride containing mercury
After encountering water, mercury chloride therein is just soluble in water, obtains recyclable recycling mercury chloride liquid, the recycling chlorization mercury liquid
Body can be repeated for the high-temperature gas of spray chloride containing mercury.
Optimal, in the useless mercury catalyst heating stepses, useless mercury catalyst mercury content to be heated is higher than 1%, in recovery furnace
Temperature is 320~500 DEG C, and the recyclable recovered carbon mercury content is lower than 0.1%；The recycling mercury chloride step
In, it is the water or recyclable time carried out in the equipment made of titanium material perhaps titanium alloy material with 30~50 DEG C
The high-temperature gas for receiving mercury chloride liquid spray chloride containing mercury is more than 4 in the mercury content of Ke Xunhuanliyong recycling mercury chloride liquid
The high-temperature gas of spray chloride containing mercury is just no longer used to when~5%.
Optimal, the recycling mercury chloride step specifically includes to be cooled down in high-temperature gas and surge tank completely in titanium cooler
Two steps of mercury chloride are absorbed,
Wherein cooling high-temperature gas step in titanium cooler specifically:
Titanium cooler internal structure is that titanium material or titanium alloy material are made, and the titanium cooler of tubbiness is arranged vertically,
And side wall at least opens up two air inlets tilted down, the high-temperature gas of chloride containing mercury enters titanium cooler from air inlet
In, the partition that the space in titanium cooler is vertically disposed is isolated into the access of turning back by air inlet to gas outlet, spray equipment
Setting sprays containing in gas path of turning back on titanium cooler top, with water or recyclable recycling mercury chloride liquid
The high-temperature gas of mercury chloride so that the temperature of high-temperature gas reduces, while making the mercury chloride in the high-temperature gas of chloride containing mercury
It is soluble in water, while the structure inside titanium cooler is sprayed with water or recyclable recycling mercury chloride liquid, it plays cold
But the effect of equipment, what is come out by gas outlet is chloride containing mercury gas that temperature reduces, and recyclable after spray is returned
It receives mercury chloride liquid to enter in solution storage tanks, be recycled；
Mercury chloride step is wherein fully absorbed in surge tank specifically:
The chloride containing mercury gas come out by titanium cooler enters in surge tank, and surge tank and at least five gas-liquid mixeds fill
Connection is set, the water inlet pipe of Liqiud-gas mixing device upper end is connected to solution storage tanks, and water inlet pipe is arranged in mixing chamber, mixing chamber side
The tracheae that enters in face is connected to surge tank, and horizontal line intersects with vertical line where water inlet pipe where tracheae, following in solution storage tanks
The negative pressure that the recycling mercury chloride liquid that ring utilizes enters Liqiud-gas mixing device flowing generation makes the chloride containing mercury vapour in surge tank
Body constantly enters mixing chamber and mixes with Ke Xunhuanliyong recycling mercury chloride liquid, so that the mercury chloride in chloride containing mercury gas is molten
In Ke Xunhuanliyong recycling mercury chloride liquid, the under shed of Liqiud-gas mixing device lower end is connected to solution storage tanks.
Optimal, useless mercury catalyst high efficiente callback technique is the recyclable recycling chlorination by entering Liqiud-gas mixing device
The negative pressure that the flowing of mercury solution body generates is power, promotes high-temperature gas and the flowing of chloride containing mercury gas of chloride containing mercury, accelerates to contain chlorine
Change the speed that the mercury chloride in the high-temperature gas and chloride containing mercury gas of mercury enters in recyclable recycling mercury chloride liquid
Degree；In the titanium cooler in cooling high-temperature gas step, in spray equipment flow rate of liquid control 25~30 cubic metres/it is small
When；It is fully absorbed in the surge tank in mercury chloride step, recyclable recycling mercury chloride liquid enters gas-liquid mixed dress
The flow control set keeps negative pressure -100~0Pa in 80~100 cubes ms/h, the surge tank.
Optimal, it further include vent gas treatment step, the upper end of solution storage tanks is connected to exhaust gas processing device, is stored up from solution
The tail gas Hg chloride content gone out in tank is deposited lower than 0.01mg/ cubic metres；In the titanium cooler in cooling high-temperature gas step,
The hot-gas temperature of the chloride containing mercury entered in titanium cooler from air inlet is 300~350 DEG C, is contained by what gas outlet came out
Mercury chloride gas temperature is 80~110 DEG C.
Optimal, it is further comprising the steps of:
High-pressure electrostatic processing: useless mercury catalyst obtains useless mercury catalyst to be heated after high-pressure pulse electric is handled；Wherein
The electric field strength of high-pressure pulse electric be not less than 30kV/cm, pulse width be 0~100 μ s, pulse frequency be 1000~
2000Hz。
A kind of device of useless mercury catalyst high efficiente callback, including transporter A, high-voltage electrostatic treating device, material storing box, recycling
Furnace, titanium cooler, surge tank, Liqiud-gas mixing device, solution storage tanks, circulating pump, condenser, transporter B, recovered carbon storage
Tank, exhaust gas processing device；High-voltage electrostatic treating device is arranged on transporter A, and the tail end of transporter A is connected to material storing box, storage
The feed opening of hopper is connected to recovery furnace feed inlet, and the discharge port of recovery furnace is located on transporter B, the tail end of transporter B with return
The connection of active carbon storage tank is received, the side of recovery furnace is provided with titanium cooler, and titanium cooler upper end is provided with water inlet, and lower end is set
Be equipped with water outlet, inlet and outlet are connected to solution storage tanks, the side wall of recovery furnace by least two gas outlets with
The connection of titanium cooler, the gas outlet of titanium cooler upper end are connected to surge tank, the gas outlet of surge tank lower end and at least five gas
Liquid mixing arrangement enters tracheae connection, and the water inlet pipe of Liqiud-gas mixing device is connected to solution storage tanks, under Liqiud-gas mixing device
Opening is connected to solution storage tanks, and the liquid in solution storage tanks is pumped into condenser by circulating pump, by condensed liquid
It pumps in Liqiud-gas mixing device and titanium cooler.
Optimal, the titanium cooler is made of titanium material or titanium material, and including cooling tank, air inlet, go out
Port, water inlet, spray device, water outlet, partition, support tube, the upper end of cooling tank offer water inlet and gas outlet, cooling
The side of tank is provided with the air inlet being connected to recovery furnace, and air inlet tilts down, i.e. air inlet axis and cooling tank wall folder
Angle is 70~85 °, at least one partition is arranged in cooling tank, and one end of partition and cooling tank are tightly connected, and the other end with
There are gases for cooling tank by spacing, the two sides of partition and cooling tank sealed connection, and horizontally disposed support tube runs through partition, and
Both ends are fixedly connected with cooling top tank structure, and the space in cooling tank is isolated into logical by turning back for air inlet to gas outlet by partition
Road, the upper end in cooling tank is arranged in spray device, and is connected to water inlet, and the space top of partition isolation is provided with water mist
The lower end of cooling tank is arranged in device, water outlet；Spray device includes water inlet pipe, spray pipe, water mist spraying head, water inlet line
One end is connected to water inlet, and the other end is connected to spray pipe, and spray pipe lower part is arranged at intervals with water mist spraying head, cooling tank
For double-layer structure, i.e. cooling tank includes internal layer, outer layer, heat dissipation baffle, cooling water inlet, hot water outlet, and internal layer is arranged in outer layer
Inside is provided with the upward heat dissipation baffle of spiral between internal layer and outer layer, heat dissipation baffle is fixedly connected with internal layer, and is had with outer layer
Gap is provided with cooling water inlet on the downside of outer layer, is provided with hot water outlet on the upside of outer layer, hot water outlet and cooling water inlet with
Space connection between internal layer and outer layer, then cooling water is entered by cooling water inlet reaches hot water outlet into after crossing heat dissipation baffle
Discharge.
Optimal, the Liqiud-gas mixing device, Liqiud-gas mixing device includes water inlet pipe, mixing chamber, enters tracheae, mixes dress
It sets, one end of water inlet pipe is large diameter end, and the other end is small-caliber end, large diameter end and water-supply-pipe flanged joint, and is connected to,
Water inlet pipe periphery is provided with the ring flange to match with mixing chamber upper opening, water inlet pipe and mixing chamber upper opening flanged joint, i.e.,
Water inlet pipe is arranged in mixing chamber, and the side wall of mixing chamber is connected to tracheae is entered, and enters tracheae place horizontal line and water inlet pipe place
Vertical line intersection enters tracheae and appendix flanged joint, and is connected to, and the negative pressure that the water flowing in water inlet pipe generates makes in tracheae
Chlorination mercury gas constantly enter mixing chamber, the under shed of mixing chamber and gas-liquid pipe flanged joint out, and be connected to, under mixing chamber
The bore that is open is less than upper opening bore, and evenly mixing device is located at the lower opening of the mixing chamber, and evenly mixing device includes axis, leaf
Piece, strip hole and circular hole, axis both ends are fixedly connected with mixing chamber, and T-shaped blade arranges that the wide one end of blade is around axis
Free end, and narrow one end is fixedly connected with axis, strip hole is provided on the blade of free end, and set on axis part
It is equipped with circular hole.
As shown from the above technical solution, useless mercury catalyst high efficiente callback technique provided by the invention and device, can high efficiente callback
Mercury chloride and active carbon in useless mercury catalyst, recyclable recovered carbon mercury content are lower than 0.1%, the chlorination in tail gas
Mercury content is lower than 0.01mg/ cubic metres, it can be seen that the one side mercury chloride rate of recovery is very high, and another aspect active carbon can recycle
It utilizes, is reduced costs while reducing pollution.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of useless mercury catalyst high efficiente callback device.
Attached drawing 2 is the side view of titanium cooler in useless mercury catalyst high efficiente callback technique and device.
Attached drawing 3 is the top view of titanium cooler in useless mercury catalyst high efficiente callback technique and device.
Attached drawing 4 is the cross-sectional view of titanium cooler top view in useless mercury catalyst high efficiente callback technique and device.
Attached drawing 5 is the cross-sectional view of Liqiud-gas mixing device in useless mercury catalyst high efficiente callback technique and device.
In figure: transporter A10, high-voltage electrostatic treating device 20, material storing box 30, recovery furnace 40, titanium cooler 50, cooling tank
51, air inlet 52, gas outlet 53, water inlet 54, spray device 55, spray pipe 551, water mist spraying head 552, water outlet 56, every
Plate 57, support tube 58, surge tank 60, Liqiud-gas mixing device 70, water inlet pipe 71, mixing chamber 72, enter tracheae 73, evenly mixing device 74,
Axis 740, blade 741, strip hole 742, circular hole 743, solution storage tanks 80, circulating pump 90, condenser 100, transporter B110,
Recovered carbon storage tank 120, exhaust gas processing device 130.
Specific embodiment
In conjunction with attached drawing of the invention, the technical solution of inventive embodiments is further described in detail.
A kind of useless mercury catalyst high efficiente callback technique, comprising the following steps:
S1: high-pressure electrostatic processing: useless mercury catalyst obtains useless mercury catalyst to be heated after high-pressure pulse electric is handled；
Wherein the electric field strength of high-pressure pulse electric be not less than 30kV/cm, pulse width be 0~100 μ s, pulse frequency be 1000~
2000Hz。
S2: useless mercury catalyst heating: to be heated useless mercury catalyst of the mercury content higher than 1% is in recovery furnace 40, recovery furnace 40
Interior temperature is at least up to 320 DEG C, as 320~500 DEG C, and the mercury chloride in useless mercury catalyst is made to leave activity in gaseous form
Charcoal obtains the high-temperature gas and Ke Xunhuanliyong recovered carbon of chloride containing mercury, wherein Ke Xunhuanliyong recovered carbon
Mercury content is lower than 0.1%.
S3: recycling mercury chloride: with the water for being not higher than 60 DEG C, i.e., 30~50 DEG C of water or recyclable recycling chlorination
Mercury solution body acts on the high-temperature gas of chloride containing mercury, and after the high-temperature gas of chloride containing mercury encounters water, mercury chloride therein is just dissolved in
In water, recyclable recycling mercury chloride liquid is obtained, which can be repeated for spray chloride containing mercury
High-temperature gas is just no longer used to spray when the mercury content of Ke Xunhuanliyong recycling mercury chloride liquid is more than 4~5% and contains
The high-temperature gas of mercury chloride.
The recycling mercury chloride step specifically includes in titanium cooler 50 inhales completely in cooling high-temperature gas and surge tank 60
Two steps of mercury chloride are received,
S3-1: cooling high-temperature gas step in titanium cooler 50 specifically:
50 internal structure of titanium cooler is that titanium material or titanium alloy material are made, the vertical cloth of titanium cooler 50 of tubbiness
It sets, and side wall at least opens up two air inlets tilted down 52, the high-temperature gas of chloride containing mercury enters titanium from air inlet 52
In cooler 50, the partition 57 that the space in titanium cooler 50 is vertically disposed is isolated into the folding by air inlet 52 to gas outlet 53
Access is returned, spray equipment setting is existed on 50 top of titanium cooler with water or recyclable recycling mercury chloride liquid spray
The high-temperature gas for the chloride containing mercury turned back in gas path, so that the temperature of high-temperature gas reduces, while making chloride containing mercury
Mercury chloride in high-temperature gas is soluble in water, while spraying titanium cooler with water or recyclable recycling mercury chloride liquid
Structure inside 50 plays the role of cooling equipment, and what is come out by gas outlet 53 is chloride containing mercury gas that temperature reduces, spray
Recyclable recycling mercury chloride liquid after leaching enters in solution storage tanks 80, is recycled；
S3-2: mercury chloride step is fully absorbed in surge tank 60 specifically:
It is entered in surge tank 60 by the chloride containing mercury gas that titanium cooler 50 comes out, surge tank 60 and at least five gas-liquids
Mixing arrangement 70 is connected to, and the water inlet pipe 71 of 70 upper end of Liqiud-gas mixing device is connected to solution storage tanks 80, and the setting of water inlet pipe 71 exists
In mixing chamber 72, the tracheae 73 that enters of 72 side of mixing chamber is connected to surge tank 60, where horizontal line where tracheae and water inlet pipe 71
Vertical line intersects, and the recyclable recycling mercury chloride liquid in solution storage tanks 80 enters the flowing of Liqiud-gas mixing device 70 and generates
Negative pressure make the chloride containing mercury gas in surge tank 60 constantly enter mixing chamber 72 and recycling chlorization mercury liquid can be recycled
Body mixing, so that the mercury chloride in chloride containing mercury gas is dissolved in recyclable recycling mercury chloride liquid, gas-liquid mixed dress
The under shed for setting 70 lower ends is connected to solution storage tanks 80.
Useless mercury catalyst high efficiente callback technique is the recyclable recycling chlorization mercury liquid by entering Liqiud-gas mixing device 70
The negative pressure that body flowing generates is power, promotes high-temperature gas and the flowing of chloride containing mercury gas of chloride containing mercury, accelerates chloride containing mercury
High-temperature gas and chloride containing mercury gas in mercury chloride enter the speed in recyclable recycling mercury chloride liquid.Institute
It states in titanium cooler 50 in cooling high-temperature gas step, flow rate of liquid control is at 25~30 cubes ms/h in spray equipment；Institute
It states and is fully absorbed in surge tank 60 in mercury chloride step, recyclable recycling mercury chloride liquid enters Liqiud-gas mixing device 70
Flow control at 80~100 cubes ms/h, in the surge tank 60 keep negative pressure -100~0Pa.
S4: the upper end of vent gas treatment step, solution storage tanks 80 is connected to exhaust gas processing device 130, from solution storage tanks
The tail gas Hg chloride content gone out in 80 is lower than 0.01mg/ cubic metres；In the titanium cooler 50 in cooling high-temperature gas step,
The hot-gas temperature of the chloride containing mercury entered in titanium cooler 50 from air inlet 52 is 300~350 DEG C, is gone out by gas outlet 53
The chloride containing mercury vapour temperature come is 80~110 DEG C.
Referring to shown in attached drawing 1, a kind of device of useless mercury catalyst high efficiente callback, including transporter A10, high-pressure electrostatic processing dress
Set 20, material storing box 30, recovery furnace 40, titanium cooler 50, surge tank 60, Liqiud-gas mixing device 70, solution storage tanks 80, circulating pump
90, condenser 100, transporter B110, recovered carbon storage tank 120, exhaust gas processing device 130；High-voltage electrostatic treating device 20
Be arranged on transporter A10, the tail end of transporter A10 is connected to material storing box 30, the feed opening of material storing box 30 and recovery furnace 40 into
Material mouth connection, the discharge port of recovery furnace 40 are located on transporter B110, the tail end and recovered carbon storage tank 120 of transporter B110
Connection, the side of recovery furnace 40 are provided with titanium cooler 50, and 50 upper end of titanium cooler is provided with water inlet 54, and lower end is provided with
Water outlet 56, water inlet 54 and water outlet 56 are connected to solution storage tanks 80, and the side wall of recovery furnace 40 goes out by least two
Port 53 is connected to titanium cooler 50, and the gas outlet 53 of 50 upper end of titanium cooler is connected to surge tank 60,60 lower end of surge tank
Gas outlet 53 is connected to the tracheae 73 that enters of at least five Liqiud-gas mixing devices 70, the water inlet pipe 71 and solution of Liqiud-gas mixing device 70
Holding vessel 80 is connected to, and the under shed of Liqiud-gas mixing device 70 is connected to solution storage tanks 80, and circulating pump 90 is by solution storage tanks 80
In liquid be pumped into condenser 100, by condensed liquid pump into Liqiud-gas mixing device 70 and titanium cooler 50.
Referring to shown in attached drawing 2, titanium cooler 50 is made of titanium material or titanium material, and including cooling tank 51, into
Port 52, gas outlet 53, water inlet 54, spray device 55, water outlet 56, partition 57, support tube 58, the upper end of cooling tank 51 are opened
Equipped with water inlet 54 and gas outlet 53, the side of cooling tank 51 is provided with the air inlet 52 being connected to recovery furnace 40, air inlet 52
It tilts down, i.e., 52 axis 740 of air inlet and 51 outer wall angle of cooling tank are 70~85 °, at least one partition 57 is arranged cold
But in tank 51, one end of partition 57 and cooling tank 51 are tightly connected, and there are gases to pass through spacing for the other end and cooling tank 51, every
The two sides of plate 57 and cooling tank 51 are tightly connected, and horizontally disposed support tube 58 runs through partition 57, and in both ends and cooling tank 51
Wall is fixedly connected, and the space in cooling tank 51 is isolated by the access of turning back of air inlet 52 to gas outlet 53, water mist by partition 57
The upper end in cooling tank 51 is arranged in device 55, and is connected to water inlet 54, and referring to shown in attached drawing 3 and attached drawing 4, partition 57 is isolated
Space top be provided with spray device 55, the lower end of cooling tank 51 is arranged in water outlet 56；Spray device 55 includes water inlet
Pipe, spray pipe 551, water mist spraying head 552, one end of water inlet line are connected to water inlet 54, and the other end and spray pipe 551
Connection, 551 lower part of spray pipe are arranged at intervals with water mist spraying head 552, and cooling tank 51 is double-layer structure, i.e., cooling tank 51 includes interior
Layer, outer layer, heat dissipation baffle, cooling water inlet, hot water outlet, internal layer are arranged on the inside of outer layer, are provided between internal layer and outer layer
The upward heat dissipation baffle of spiral, heat dissipation baffle are fixedly connected with internal layer, and have gap with outer layer, are provided with cooling water on the downside of outer layer
Entrance, outer layer upside are provided with hot water outlet, and the space of hot water outlet and cooling water inlet between internal layer and outer layer is connected to,
Cooling water is entered by cooling water inlet and then reaches hot water outlet discharge into crossing after heat dissipation baffle.
Referring to shown in attached drawing 5, Liqiud-gas mixing device 70, Liqiud-gas mixing device 70 includes water inlet pipe 71, mixing chamber 72, enters gas
Pipe 73, evenly mixing device 74, one end of water inlet pipe 71 is large diameter end, and the other end is small-caliber end, large diameter end and water-supply-pipe
Flanged joint, and being connected to, 71 periphery of water inlet pipe is provided with the ring flange to match with 72 upper opening of mixing chamber, water inlet pipe 71 and mixed
Closing 72 upper opening flanged joint of chamber, i.e. water inlet pipe 71 is arranged in mixing chamber 72, and the side wall of mixing chamber 72 is connected to tracheae 73 is entered,
And enter 73 place horizontal line of tracheae and intersect with 71 place vertical line of water inlet pipe, enter tracheae 73 and appendix flanged joint, and be connected to, enters
The negative pressure that water flowing in water pipe 71 generates makes the chlorination mercury gas in tracheae 73 constantly enter mixing chamber 72, mixing chamber 72
Under shed and gas-liquid pipe flanged joint out, and be connected to, the under shed bore of mixing chamber 72 is less than upper opening bore, evenly mixing device
74 are located at the lower opening of the mixing chamber 72, and evenly mixing device 74 includes axis 740, blade 741, strip hole 742 and circular hole
743,740 both ends of axis are fixedly connected with mixing chamber 72, and T-shaped blade 741 is arranged around axis 740, the wide one end of blade 741
For free end, and narrow one end is fixedly connected with axis 740, is provided with strip hole 742 on the blade 741 of free end, and close
Axis is provided with circular hole 743 on 740 part.
Useless mercury catalyst high efficiente callback technique provided by the invention and device, can high efficiente callback give up mercury catalyst in mercury chloride and
Active carbon, recyclable recovered carbon mercury content are lower than 0.1%, and the Hg chloride content in tail gas is vertical lower than 0.01mg/
Square rice, it can be seen that the one side mercury chloride rate of recovery is very high, and another aspect active carbon can recycle, and reduces the same of pollution
When reduce costs.
Claims (8)
1. a kind of useless mercury catalyst high efficiente callback technique, which comprises the following steps:
Useless mercury catalyst heating: for useless mercury catalyst to be heated in recovery furnace, recycling in-furnace temperature is at least up to 320 DEG C, makes useless mercury
Mercury chloride in catalyst leaves active carbon in gaseous form, the recycling that obtains the high-temperature gas of chloride containing mercury and can be recycled
Active carbon；
Recycle mercury chloride: with the high-temperature gas of the water effect chloride containing mercury not higher than 60 DEG C, the high-temperature gas of chloride containing mercury encounters
After water, mercury chloride therein is just soluble in water, obtains recyclable recycling mercury chloride liquid, which can
It is recycled and reused for the high-temperature gas of spray chloride containing mercury；The recycling mercury chloride step specifically includes cooling High Temperature Gas in titanium cooler
Two steps of mercury chloride are fully absorbed in body and surge tank,
Wherein cooling high-temperature gas step in titanium cooler specifically:
Titanium cooler internal structure is that titanium material or titanium alloy material are made, and the titanium cooler of tubbiness is arranged vertically, and side
Wall at least opens up two air inlets tilted down, and the high-temperature gas of chloride containing mercury enters in titanium cooler from air inlet, titanium
The partition that space in cooler is vertically disposed is isolated into the access of turning back by air inlet to gas outlet, and spray equipment setting exists
Titanium cooler top sprays the chloride containing mercury in gas path of turning back with water or recyclable recycling mercury chloride liquid
High-temperature gas so that the temperature of high-temperature gas reduces, while the mercury chloride in the high-temperature gas of chloride containing mercury being made to be dissolved in water
In, while the structure inside titanium cooler is sprayed with water or recyclable recycling mercury chloride liquid, play cooling equipment
Effect, what is come out by gas outlet is chloride containing mercury gas that temperature reduces, the recyclable recycling chlorination after spray
Mercury solution body enters in solution storage tanks, is recycled；
Mercury chloride step is wherein fully absorbed in surge tank specifically:
The chloride containing mercury gas come out by titanium cooler enters in surge tank, and surge tank and at least five Liqiud-gas mixing devices connect
Logical, the water inlet pipe of Liqiud-gas mixing device upper end is connected to solution storage tanks, and water inlet pipe is arranged in mixing chamber, mixing chamber side
Enter tracheae to be connected to surge tank, horizontal line intersects with vertical line where water inlet pipe where tracheae, the recyclable benefit in solution storage tanks
The negative pressure that recycling mercury chloride liquid enters Liqiud-gas mixing device flowing generation makes the chloride containing mercury gas in surge tank not
It is disconnected to be mixed into mixing chamber with the recycling mercury chloride liquid that can be recycled, so that be dissolved in can for the mercury chloride in chloride containing mercury gas
In the recycling mercury chloride liquid recycled, the under shed of Liqiud-gas mixing device lower end is connected to solution storage tanks.
2. useless mercury catalyst high efficiente callback technique according to claim 1, it is characterised in that: the useless mercury catalyst heating stepses
In, useless mercury catalyst mercury content to be heated is higher than 1%, and recycling in-furnace temperature is 320~500 DEG C, and described recyclable returns
It receives active carbon mercury content and is lower than 0.1%；It in the recycling mercury chloride step, is set made of titanium material or titanium alloy material
Standby middle progress sprays the high-temperature gas of chloride containing mercury with 30~50 DEG C of water or recyclable recycling mercury chloride liquid,
Spray chloride containing mercury is just no longer used to when the mercury content of Ke Xunhuanliyong recycling mercury chloride liquid is more than 4~5%
High-temperature gas.
3. useless mercury catalyst high efficiente callback technique according to claim 2, it is characterised in that: useless mercury catalyst high efficiente callback technique
It is that the negative pressure generated is flowed for power by the recyclable recycling mercury chloride liquid for entering Liqiud-gas mixing device, promotes containing chlorine
High-temperature gas and the flowing of chloride containing mercury gas for changing mercury, accelerate the chlorination in the high-temperature gas and chloride containing mercury gas of chloride containing mercury
Mercury enters the speed in recyclable recycling mercury chloride liquid；In the titanium cooler in cooling high-temperature gas step,
Flow rate of liquid control is at 25~30 cubes ms/h in spray equipment；It is fully absorbed in the surge tank in mercury chloride step, it can
The recycling mercury chloride liquid recycled enters the flow control of Liqiud-gas mixing device at 80~100 cubes ms/h, described slow
Rush holding negative pressure -100~0Pa in tank.
4. useless mercury catalyst high efficiente callback technique according to claim 3, it is characterised in that: it further include vent gas treatment step,
The upper end of solution storage tanks is connected to exhaust gas processing device, and the tail gas Hg chloride content gone out from solution storage tanks is lower than
0.01mg/ cubic metres；In the titanium cooler in cooling high-temperature gas step, is entered in titanium cooler from air inlet and contain chlorine
The hot-gas temperature for changing mercury is 300~350 DEG C, is 80~110 DEG C by the chloride containing mercury vapour temperature that gas outlet comes out.
5. useless mercury catalyst high efficiente callback technique according to claim 1, it is characterised in that: further comprising the steps of: high pressure
Electrostatic treatment: useless mercury catalyst obtains useless mercury catalyst to be heated after high-pressure pulse electric is handled；Wherein high-pressure pulse electric
Electric field strength be not less than 30kV/cm, pulse width be 0~100 μ s, pulse frequency be 1000~2000Hz.
6. a kind of device of useless mercury catalyst high efficiente callback, it is characterised in that: including transporter A, high-voltage electrostatic treating device, storing
Case, recovery furnace, titanium cooler, surge tank, Liqiud-gas mixing device, solution storage tanks, circulating pump, condenser, transporter B, recycling
Active carbon storage tank, exhaust gas processing device；High-voltage electrostatic treating device is arranged on transporter A, the tail end and material storing box of transporter A
Connection, the feed opening of material storing box are connected to recovery furnace feed inlet, and the discharge port of recovery furnace is located on transporter B, the tail of transporter B
End is connected to recovered carbon storage tank, and the side of recovery furnace is provided with titanium cooler, and titanium cooler upper end is provided with water inlet, and
Lower end is provided with water outlet, and inlet and outlet are connected to solution storage tanks, and the side wall of recovery furnace goes out by least two
Port is connected to titanium cooler, and the gas outlet of titanium cooler upper end is connected to surge tank, the gas outlet of surge tank lower end at least
The tracheae that enters of five Liqiud-gas mixing devices is connected to, and the water inlet pipe of Liqiud-gas mixing device is connected to solution storage tanks, gas-liquid mixed dress
The under shed set is connected to solution storage tanks, and the liquid in solution storage tanks is pumped into condenser by circulating pump, after condensation
Liquid pump into Liqiud-gas mixing device and titanium cooler.
7. the device of useless mercury catalyst high efficiente callback according to claim 6, it is characterised in that: the titanium cooler is by titanium
Material or titanium alloy material are made, and including cooling tank, air inlet, gas outlet, water inlet, spray device, water outlet, every
Plate, support tube, the upper end of cooling tank offer water inlet and gas outlet, the side of cooling tank be provided be connected to recovery furnace into
Port, air inlet tilt down, i.e. air inlet axis and cooling tank wall angle is 70~85 °, and the setting of at least one partition exists
In cooling tank, one end of partition and cooling tank are tightly connected, and there are gases by spacing for the other end and cooling tank, and the two of partition
Side and cooling tank are tightly connected, and horizontally disposed support tube runs through partition, and both ends are fixedly connected with cooling top tank structure, and partition will
Space in cooling tank is isolated into the access of turning back by air inlet to gas outlet, and the upper end in cooling tank is arranged in spray device,
And be connected to water inlet, the space top of partition isolation is provided with spray device, and the lower end of cooling tank is arranged in water outlet；Water
Mist device includes water inlet pipe, spray pipe, water mist spraying head, and one end of water inlet line is connected to water inlet, and the other end and spraying
Pipeline connection, spray pipe lower part is arranged at intervals with water mist spraying head, and cooling tank is double-layer structure, i.e., cooling tank include internal layer, it is outer
Layer, heat dissipation baffle, cooling water inlet, hot water outlet, internal layer setting be provided on the inside of outer layer, between internal layer and outer layer spiral to
On heat dissipation baffle, heat dissipation baffle is fixedly connected with internal layer, and has a gap with outer layer, and outer layer downside is provided with cooling water inlet,
It is provided with hot water outlet on the upside of outer layer, the space of hot water outlet and cooling water inlet between internal layer and outer layer is connected to, cooling
Water is entered by cooling water inlet and then reaches hot water outlet discharge into crossing after heat dissipation baffle.
8. the device of useless mercury catalyst high efficiente callback according to claim 6, it is characterised in that: the Liqiud-gas mixing device,
Liqiud-gas mixing device includes water inlet pipe, mixing chamber, enters tracheae, evenly mixing device, and one end of water inlet pipe is large diameter end, and the other end
For small-caliber end, large diameter end and water-supply-pipe flanged joint, and be connected to, water inlet pipe periphery is provided with and mixing chamber upper opening phase
The ring flange matched, water inlet pipe and mixing chamber upper opening flanged joint, i.e. water inlet pipe are arranged in mixing chamber, the side wall of mixing chamber with
Enter tracheae connection, and enter tracheae place horizontal line and intersect with vertical line where water inlet pipe, enters tracheae and appendix flanged joint, and even
Logical, the negative pressure that the water flowing in water inlet pipe generates makes the chlorination mercury gas in tracheae constantly enter mixing chamber, mixing chamber
Under shed and gas-liquid pipe flanged joint out, and be connected to, the under shed bore of mixing chamber is less than upper opening bore, and evenly mixing device is located at
The lower opening of the mixing chamber, evenly mixing device include axis, blade, strip hole and circular hole, and axis both ends are fixed with mixing chamber
Connection, T-shaped blade arrange that the wide one end of blade is free end, and narrow one end is fixedly connected with axis around axis, freely
It is provided with strip hole on the blade at end, and is provided with circular hole on axis part.
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| CN201810442830.8A CN108545741B (en) | 2018-05-10 | 2018-05-10 | Useless mercury catalyst high efficiente callback technique and device |
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| CN201810442830.8A CN108545741B (en) | 2018-05-10 | 2018-05-10 | Useless mercury catalyst high efficiente callback technique and device |
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| CN108545741B true CN108545741B (en) | 2019-10-29 |
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|---|---|---|---|---|
| US3129152A (en) * | 1959-08-12 | 1964-04-14 | Hoechst Ag | Process for the electrolytic recovery of chlorine from hydrogen chloride or hydrochloric acid |
| CN103693676A (en) * | 2013-12-12 | 2014-04-02 | 毛振华 | Waste mercury catalyst recovery technology and waste mercury catalyst recovery device |
| CN203683141U (en) * | 2013-12-12 | 2014-07-02 | 毛振华 | Gas retort cooler for recycling waste mercury catalyst |
| CN105944769A (en) * | 2016-05-19 | 2016-09-21 | 昆明理工大学 | Method using microwave heating to treat waste mercuric chloride catalyst |
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2018
- 2018-05-10 CN CN201810442830.8A patent/CN108545741B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3129152A (en) * | 1959-08-12 | 1964-04-14 | Hoechst Ag | Process for the electrolytic recovery of chlorine from hydrogen chloride or hydrochloric acid |
| CN103693676A (en) * | 2013-12-12 | 2014-04-02 | 毛振华 | Waste mercury catalyst recovery technology and waste mercury catalyst recovery device |
| CN203683141U (en) * | 2013-12-12 | 2014-07-02 | 毛振华 | Gas retort cooler for recycling waste mercury catalyst |
| CN105944769A (en) * | 2016-05-19 | 2016-09-21 | 昆明理工大学 | Method using microwave heating to treat waste mercuric chloride catalyst |
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